Brake-beam suspension



I. L. BURTON. BRAKE BEAM SUSPENSION.

APPLICATION FILED MAY 15. 1920.'

Patented Aug.

ATTOR Y ha r FICE.

THOMAS L. BURTON, 015 $1. LOUIS, MISSOURI, ASSIGNOR TO THE AMERICAN BRAKE COMPANY, OI ST. LOUIS, MISSOURI, A CORPORATION OF MISS OURI.

BRAKE-BEAM SUSPENSION.

inseam.

PatntedAug. 3c, 1921.

Original application filed. May 18, 1917, Serial No. 169,408. Divided and this application filed May 15,

" 1920. Serial No. 381,542.

'T 0 all whom it may concern:

Be it known that I, THoMAs'L. BURTON, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Brake-Beam Suspensions, of which improvement the following is a specification.

This invention relates to suspension means for brake beams for railway cars, and more particularly to that form of brake beam in which the brake shoes are pivoted upon trunnions at the opposite ends of the beam, one of the objects being to provide improved means for maintaining the beam in a substantially parallel relation as the brake beam and shoe are moved toward the wheel in the application movement, and away from the same during the release action, whereby the shoe Wlll remain substantlally concentric to the wheel under the various conditions.

of wear of the brake shoe and the. wheel.

This application is a division of my prior application Serial No, 169,408, filed May 18, 1917. i

In the accompanying drawing: Figure 1 is a side elevation of a brake beam suspension embodyingmy improvement; Fig. 2, an end view of. the same, with the brake beam shown in longitudinal section; Fig. 3, a detail View, in plan, showing one form of jaw and its connections with the hanger and the truck lever; and, Fig. 4, a similar View showing a modified form of As shown in the drawing, a brake beam, 10, having trunnions, 11, at its ends, is sus pended by means of the usual hangers, 12, pivotally connected to the truck frame and to the trunnions of the brake beam. The brake heads, 13, are also preferably pivotally i'nounted on said trunnions,

'W here the usual type of clasp brake rigging is employed, with two sets of truck levers and rods, one on each side of the truck, such as truck lovers, 14%, and rods, 15 and 16,

' which parts are di'iplicat'ed at each side of each pair of wheels, the brake beams are provided with rigidly connected jaws, 20, for pivotal connection with the lower ends of said truck levers, as will be readily understood.

in accordance with my improvement, an

additional swinging hanger is provided for thebralre beam, said hanger being pivoted at its upper end to the truck frame, and

pivoted at its lower end to the jaw, 20, of

its application movement in bi aging the brake shoes up to the wheels, and its release or backward movement from the wheels,'and also that the brake shoes will bemaint-ained substantially concentric with the wheels under the various conditions of wear of the shoe and the wheel.

Having now described my invention, what I claim as new and-desire to secure by Letters Patent is:

1. In a brake device, the combination of a brake beam having jaws near its opposite ends, hangers for said beam, truck brake levers pivotally attached to said jaws, and additional hangers pivotally supported on the truck frame and connected to said jaws.

2. In a-brake device, the combination of a brake beam having trunnidns ati' its opposite ends, brake heads and hangers plvotally mounted. on said trunnions, aws on said brake beam, truck brake leverspivotally, cpn l.

nected to said jaws, and additional. hangers pivotally supported on the truck frame and also connected to said jaws.

3. In a brake device, the combination of a brake beam having jaws near its opposite ends, hangers for said beam, truck brake levers pivotally attached to said jaws,-and

additional hangers pivotally supported on,

the truck frame and connected to the same pivot with the brake levers on said aws.

4. In. brake mechanism, the combinationof I 100 jaws, and a supporting hanger mounted in in the other of said jaws, and a single pin the other of said 'aws. assing through said jaws, brake lever and 5. In brake mechanism, the combination of hanger, whereby the brake mechanism is held 1 a brake beam, in member secured at one end in a suspended position. 5 to said brake beam, and at theother end hav- In testimony whereof I have hereunto set ing two jaws, a brake lever mounted in one my hand. of said jaws, a supporting hanger mounted THOMAS L. BURTQN. 

